Arcane Seal is one of the primary currencies to unlock major passive points in Blue Protocol: Star Resonance. There are two currencies that can be used for unlocking passives, with one being directed to small nodes, and the other being for larger nodes. Arcane Seal is used for the latter, and it is not obtained by simply leveling up.
There are three kinds of Arcane Seal for different classes, including Attack Red, Guardian Blue, and Support Green.
This article lists the different ways to get Arcane Seal for unlocking large passive nodes.
Best Arcane Seal sources in Blue Protocol: Star Resonance
Here is a list of the places you can get Arcane Seals from:
- Basic Star Chest (chance to drop).
- Arcane Seal Chest from multiple shops and activities.
- Honor Coin Shop.
- Trial Path, specifically every three floors and completion of the time-challenges.
- Trading Center.
- Season Pass.
- Mystery Store.
Basic Star Chest:

Can be obtained from most activities, by leveling up, and the Mystery Store in exchange for Bound Red Orbs. Each major node requires one Seal in the early game. However, we do not recommend purchasing Chests from Mystery Store, and instead, turn in Life Skill materials for Cargo box within the Guild Center to get a Chest.
Arcane Seal Chest:

An Arcane Seal Chest allows a player to choose between a Red, Blue, or a Green Arcane Seal, according to your equipped class. These chests can be found in the Honor Coin Shop, Season Pass, and the Mystery Store.
Trial Path:

The Trial Path, accessible in Asterleeds, offers multiple Arcane Seals upon completing of three floors. Hence, in every three floor thresholds, there will be an Arcane Seal waiting for you, alongside some Talent Points.
Other sources:
Trading Center is a good place to purchase off Arcane Seals in exchange for Luno, which is the basic currency in Blue Protocol: Star Resonance.
Check out our other articles on the game:
- Account not activated error
- Is Blue Protocol: Star Resonance a Gacha game?
- Confirmation of global Steam and Mobile release
- Day 1 beginner guide
- How to farm better gear in Blue Protocol: Star Resonance
- How to increase Ability Score
- Beginner mistakes to avoid